Geoeg-e s



GEORGE S. LEE, 0F

DENVER, coLoRADo.

'Fi RE=PROF- PAENT.

SPECIFICATION forming part of Letters Patent No. 388,885, dated September 4, 1888.

,Application filed November 22, 1887,

at all whom, it may concern-.-

Be it known that I, GEORGE S. LEE, a citizen of the United States, residing at Denver,

fire-proof and preservative paint for the protection of metallic objects exposed to the weather-as metal roofs, bridges, &e., of timber exposed to the ravages of insects or to dampness, and decay, and for the waterproofing of walls, roofs, &c.; and it consists in the composition more fully hereinafter described and claimed. 7

I use for the solid base of my improved paint what is called iron slag or furnace slag, which is therefuse slag from gold and silver reduction works, and is called iron slag from the very large percent-age of iron which it contains, varying from thirty-three to fifty per cent. in the form 01' protoxide of iron, with which is combined a large percentage of silica, lime, 85c. While in this material the proportions of the constituents often varies, as shown by the following analysis taken from a number . I No. 1. No.2.

Protoxide of iron. 11 33. 80 Silica =33. 37 37.13 Lime 10. '77 15. 88 Alumina 12. 35 9. 56 Magnesia 1. 97 3. 39 Silver 017 09.6

by far the greater portion is composed of iron and silica in such intimate union as to Serial No. 255.913. (No specimens.)

fire-slag, (impure from coal measures) five per cent. lime, two to three per cent, all being heat and agitation there is then incoporated therewith asphalt, ten per cent.,and'petroleu m, (crude,) two per cent. This forms a mastic which is the base or solid part of my improved paint. Tothis mastic is then added turpencles, until the proper degree of consistency is reached. For some purposes, as the spreading of the composition thickly upon walls, &c., as

cle will be used, while for brush use enough should be added to reduce it to the consistency of ordinary paint.

mixed together and then reducedby the addition of proper liquid-paint vehicles, the asphalt may first be reduced with such vehicles,

paints and varnishes, and so reduced he then mixed with the solid constituents. In either case the invention remains the sa1ne-a paint composition consisting, essentially, of this iron slag, asphalt, and a liquidpaint vehicle.

Thus prepared a very valuable water-p roof, fire-proof, and preservative paint or mastic is furnished, the iron and silica being so intimately blended that the paint when dry gives a hard glossy and glassy surface, impervious to dampness and to the attacks of insects.

Having thus described my invention, what I claim is- The paint composition herein described, consistingofiggg sl a g from gold and silver reduction works, talc, fire-clay lipi e asphalt, petroleum, and a lirfdidv ehicle for paint, the slag GEORGE S. LEE.

Witnesses:

JAMES-L. NORRIS, J. A. RUTHERFORD.

intimately blended and ground together- By.

tine, oil, or any of the approved liquid vehimortar is spread, very little liquidpaint vehi-.

as in the ordinary method of making asphalt.

being pulverized, substantially as described.

Instead of the asphalt and slag being first 

